• CSCD核心中文核心科技核心
  • RCCSE(A+)公路运输高质量期刊T1
  • Ei CompendexScopusWJCI
  • EBSCOPж(AJ)JST
二维码

隧道建设(中英文) ›› 2026, Vol. 46 ›› Issue (7): 1446-1459.DOI: 10.3973/j.issn.2096-4498.2026.07.006

• 研究与探索 • 上一篇    下一篇

压缩空气储能硐室焊接钢衬疲劳性能试验

费文斌1, 2, 黎豪轩1, 2, 李鹏3, 许卫3, 周奥辉1, 2, *   

  1. (1. 湖南大学土木工程学院, 湖南 长沙 410082; 2. 湖南大学 地下空间开发先进技术与智能装备湖南省工程研究中心, 湖南 长沙 410082; 3. 中国电建集团中南勘察设计研究院有限公司, 湖南 长沙 410014)
  • 出版日期:2026-07-20 发布日期:2026-07-20
  • 作者简介:费文斌(1990—),男,河南新乡人,2020年毕业于墨尔本大学,岩土工程专业,博士,教授,现从事地下储能相关研究工作。E-mail: wenbinfei@hnu.edu.cn。*通信作者: 周奥辉, E-mail: aohuizhou@hnu.edu.cn。

Experimental Study of Fatigue Performance of Welded Steel Linings for Compressed Air Energy Storage Caverns

FEI Wenbin1, 2, LI Haoxuan1, 2, LI Peng3, XU Wei3, ZHOU Aohui1, 2, *   

  1. (1. College of Civil Engineering, Hunan University, Changsha 410082, Hunan, China; 2. Advanced Technology and Intelligent Equipment for Underground Space Development at Hunan University, Hunan Engineering Research Center, Changsha 410082, Hunan, China; 3. PowerChina Zhongnan Engineering Co., Ltd., Changsha 410014, Hunan, China)
  • Online:2026-07-20 Published:2026-07-20

摘要: 压缩空气储能人工硐室中焊接钢衬密封层在长期循环荷载作用下的疲劳性能会直接影响结构安全与使用寿命。为探明Q345R焊接钢衬在循环荷载作用下的疲劳性能及其主要影响因素,研究应力幅值、焊接工艺和钢衬厚度对焊接钢衬疲劳性能的影响,并揭示其宏-微观断裂机理,获取不同防腐涂层在循环荷载下的抗裂性能,采用不同厚度(18、22、25 mm)的Q345R钢板,制备不同焊接方式下(气保焊或埋弧焊、双面焊或单面焊)的焊接钢板试样,并选取部分试样涂装不同的防腐涂层(冷喷锌、石墨烯锌、环氧涂层),开展无损检测(磁粉检测、X射线检测)、疲劳测试(207~345、207~470、207~530 MPa)和微观观测(涂层显微观测、断口SEM分析)试验。研究结果表明: 1) 在相同Q345R钢板厚度下焊接钢衬的应变与应力幅值呈显著正相关,而焊接方式及焊接面数对应变的影响不显著; 2) 在单轴拉伸试验中,焊接试样的断裂发生于母材区域,而在疲劳加载下,裂纹萌生于焊缝与母材的交界处,最终断裂位于母材范围内; 3) 在疲劳荷载下,防腐涂层的抗裂性能排序为石墨烯锌涂层>环氧涂层>冷喷锌涂层; 4) 在3个应力区间内,所有疲劳断裂试样的轴向应变均为11%~13%,可初步视为该类焊接试样疲劳破坏的临界应变; 5)在压缩空气储能工程中,利用钢板塑性性能降低钢衬厚度以节约成本具有潜力,但相关理论与准则仍需通过更全面的室内与原位试验加以完善。

关键词: 压缩空气储能, 人工硐室, 钢板衬砌, 疲劳性能, 防腐涂层, 断裂机理

Abstract: The fatigue performance of the welded steel lining sealing layer in artificial caverns for compressed air energy storage under long-term cyclic loading directly affects structural safety and service life. To elucidate the fatigue performance of Q345R welded steel linings under cyclic loading and identify the dominant influencing factors, the effects of stress amplitude, welding procedure, and steel lining thickness on fatigue behavior are investigated. The macroscale and microscale fracture mechanisms are further analyzed, and the crack resistance of various anticorrosive coatings under cyclic loading is evaluated. Accordingly, Q345R welded steel plate specimens were fabricated from base plates of three thicknesses (18, 22, and 25 mm) using different welding procedures (gas-shielded welding and submerged arc welding; double-sided and single-sided welding) and different anticorrosive coatings (cold-sprayed zinc, graphene zinc, and epoxy coatings). Subsequently, a systematic experimental program was performed, comprising nondestructive testing (magnetic particle and X-ray radiographic testing), fatigue tests (207-345, 207-470, and 207-530 MPa), and microscopic observations (coating microstructural examination and fracture surface analysis using scanning electron microscopy). The results indicate the following: (1) At the same thickness, the strain of welded steel liners exhibits a marked positive correlation with stress amplitude, whereas the welding method and the number of surfaces exert no notable influence on the strain. (2) In uniaxial tensile tests, fracture of the welded specimens occurs in the base metal region, whereas under fatigue loading, although cracks initiate at the fusion line-base metal interface, the final fracture remains in the base metal area. (3) Under fatigue loading, the crack resistance of the anticorrosive coatings decreased in the following order: graphene-zinc composite coating > epoxy coating > cold-sprayed zinc coating. (4) Under the three stress ranges, all fatigue-fractured specimens exhibited axial strains ranging from 11% to 13%, which can be preliminarily considered the critical strain threshold for fatigue failure of this type of welded specimen. (5) This finding indicates that utilizing the plastic capacity of the steel plate to reduce liner thickness for cost savings holds potential in compressed air energy storage engineering. However, the associated theory and design guidelines remain to be refined through more comprehensive laboratory and insitu testing.

Key words: compressed air energy storage, artificial caverns, steel plate lining, fatigue performance, anticorrosion coating, fracture mechanism